Results 221 to 230 of about 51,864 (269)

Narrow linewidth unstable resonators

Annual Meeting Optical Society of America, 1988
We have previously demonstrated that a feedback ring in an unstable resonator can be useful in providing narrow bandwidth radiation across the full available aperture of the resonator. In this configuration the light traveling in the forward direction in the ring passes through frequency-narrowing etalons while it is collimated and is then coupled back
D. Cooper, J. L. Dexter, L. L. Tankersley, John F. Reintjes   +3 more
openaire   +1 more source

Wavelength-tunable narrow-linewidth gaseous Raman laser

Applied Optics, 2021
Gaseous Raman lasers cover a range of wavelengths but lack wavelength tunability. Here, a 1 c m − 1 linewidth 532 nm laser was used as a pump laser, and with a narrow-linewidth seed laser injection, a narrow-linewidth first Stokes (S1) Raman ...
Chencheng Shen, Xianglong Cai, Xinjun Su, Tiancheng Zheng, Jinbo Liu, Ying Chen, Yuxi Jia, Dong Liu, Jingwei Guo   +8 more
openaire   +2 more sources

Linewidth instabilities in narrow-linewidth flashlamp-pumped dye laser oscillators

Applied Optics, 1988
Linewidth instabilities in double-longitudinal-mode (250 MHz
F J, Duarte, J J, Ehrlich, S P, Patterson, S D, Russell, J E, Adams   +4 more
openaire   +2 more sources

Narrow linewidth single frequency microfiber laser

Optics Letters, 2012
A compact 2 kHz linewidth single frequency microfiber ring laser is demonstrated. Microfiber, with a diameter of 1.88 μm, which is drawn from an Er(3+)/Yb(3+) co-doped phosphate glass fiber, serves as the gain medium. By using this microfiber, a double-knot resonator with a total length of 1.75 mm is constructed.
Wei, Fan, Jiulin, Gan, Zhishen, Zhang, Xiaoming, Wei, Shanhui, Xu, Zhongmin, Yang   +5 more
openaire   +2 more sources

Modulatable narrow-linewidth semiconductor lasers

Applied Physics Letters, 1988
We find that using the technique of optical feedback locking, to narrow semiconductor linewidths, does not sacrifice the ability to modulate the laser’s frequency via the injection current. The frequency of a laser is stabilized to a separate Fabry–Perot reference cavity using resonant optical feedback and can be modulated efficiently at frequencies ...
L. Hollberg, M. Ohtsu
openaire   +1 more source

Integrated-optic, narrow-linewidth laser

Applied Physics Letters, 1986
We report the demonstration of the single-frequency and narrow-linewidth (<100 kHz) operation of an extended cavity laser consisting of a Ti:LiNbO3 single-mode waveguide circuit and an InGaAsP waveguide gain medium. A parallel coupled cavity, electro-optic elements for tuning the resonant frequencies of the cavities, and an external phase ...
S. K. Korotky, E. A. J. Marcatili, G. Eisenstein, J. J. Veselka, F. Heismann, R. C. Alferness   +5 more
openaire   +1 more source

Narrow linewidth tunable semiconductor laser

2016 Compound Semiconductor Week (CSW) [Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS), 2016
A full-C band tunable laser equipped with an air-gap suspended waveguide structure for efficient thermal heater tuning is described. It is shown that the monolithic tunable laser can simultaneously meet the requirements for the output power, side-mode suppression ratio, and spectral linewidth for 16-QAM coherent communication system.
Yasuhiro Matsui, Urban Eriksson, Jan-Olof Wesstrom, null Yitong Liu, Stefan Hammerfeldt, Martin Hassler, Bjorn Stoltz, Niclas Carlsson, Salehe Siraj, Edgard Goobar   +9 more
openaire   +1 more source

Narrow spectral linewidth semiconductor lasers

Optical and Quantum Electronics, 1992
Developments of narrow-linewidth distributed-Bragg-reflection (DBR) and distributed-feed-back (DFB) lasers are described. The design of a narrow-linewidth DBR laser is described in detail. Kl optimization from the viewpoint of narrow-linewidth operation and stable single mode operation is discussed.
T. Kunii, Y. Matsui
openaire   +1 more source

Narrow-Linewidth Microlasers on Silicon

Frontiers in Optics 2007/Laser Science XXIII/Organic Materials and Devices for Displays and Energy Conversion, 2007
After reviewing several laser sources based on high-Q microtoroid lasers, the recent observation of fundamental linewidths as narrow as 4 Hz in microtoroid lasers will be described. Inverse-power (Schawlow-Townes) broadening is observed.
Kerry Vahala, Lan Yang, Tao Lu
openaire   +1 more source

Continuously linewidth tunable, polarisation maintaining, narrow linewidth fiber laser

Fiber Lasers XVI: Technology and Systems, 2019
High power polarised narrow linewidth sources are of immense importance in coherent beam combining (increased path length accuracy), spectral beam combining (reduced angular spread), non-linear frequency conversion (increased parametric gain) and remote detection.
B. S. Vikram, Vishal Choudhury, Roopa Prakash, Santosh Aparanji, V. R. Supradeepa   +4 more
openaire   +1 more source